Sealing knife mechanism for linear film packaging machine

The utility model provides a sealing knife mechanism for a linear film packaging machine, and relates to the technical field of film packaging machines, the sealing knife mechanism comprises a machine body and a dismounting structure, the top of the machine body is rotatably connected with a cover plate, the machine body is internally provided with an installation column, the surface of the installation column is provided with a plastic film, the surface of the machine body is provided with a trapezoidal sliding groove, and the trapezoidal sliding groove is provided with a clamping groove. A trapezoidal sliding block is slidably connected to the interior of the trapezoidal sliding groove, a blade is fixedly connected to the upper surface of the trapezoidal sliding block, a handle is fixedly connected to the surface of the blade, a protection structure is arranged on the surface of the blade, and a disassembly and assembly structure is arranged at an opening of the trapezoidal sliding groove; the sealing knife